Help! Printing in CS2

S
Posted By
sales
Mar 10, 2007
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331
Replies
5
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Closed
I have a few Photos of Flowers and other Flora, The pictures look great, were taken Raw, and have an even mountain shaped histogram. When I print them on either an Epsonn R2400, or Epson 1280; I get visible posterization in the shadow areas I have tried several things, but the posterization still exists in the shadow areas.

Any Ideas?
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TW
Toobi Won Kenobi
Mar 10, 2007
wrote in message
I have a few Photos of Flowers and other Flora, The pictures look great, were taken Raw, and have an even mountain shaped histogram.

And this means? Just that you have a lot of mid tone and you haven’t clipped the shadows and highlights, it is not an indication of image"quality" There is no ideal shape for a histogram it will differ in shape and pixel distribution depending on the image being recorded.

When I print them on either an Epsonn R2400, or Epson 1280; I get visible posterization in the shadow areas I have tried several things, but the posterization still exists in the shadow areas.

Any Ideas?
Is your printer calibrated?
See http://www.computer-darkroom.com/home.htm two essays (amongst others)on CS2 colour management and printing.
TWK
S
sales
Mar 11, 2007
On Sat, 10 Mar 2007 08:38:40 -0000, "Toobi Won Kenobi" wrote:

TWK

The Histagram description was just to tell that there was no discrete brigtness levels.

But Yes TWK, The Printer is calibrated, and most other photos print out fine, it is just a few that show the posterization.

I have seen articles before stating what to do when that happens, but I cannot recall the article. It was called banding in the article.

Thanks
TW
Toobi Won Kenobi
Mar 11, 2007
wrote in message
On Sat, 10 Mar 2007 08:38:40 -0000, "Toobi Won Kenobi" wrote:

TWK

The Histagram description was just to tell that there was no discrete brigtness levels.

But Yes TWK, The Printer is calibrated, and most other photos print out fine, it is just a few that show the posterization.

I have seen articles before stating what to do when that happens, but I cannot recall the article. It was called banding in the article.

Thanks

I’ve heard of this happening when previewing 16 bit images, due to the way PS uses pyramid levels (only 8 bits/channel) for previewing at 50% and below, but it doesn’t show up in print. Are you seeing it on screen? Is it a recent phenomena? Are both printers on the same PC? If yes, try uninstalling both and only install one and try again.(check for updated drivers) Then uninstall that printer and install the other. Banding can be reduced by the addition of noise to the problem area, but why it appears on some, not all your images is a mystery.

Regards
TWK
TW
Toobi Won Kenobi
Mar 11, 2007
wrote in message
On Sat, 10 Mar 2007 08:38:40 -0000, "Toobi Won Kenobi" wrote:

TWK

The Histagram description was just to tell that there was no discrete brigtness levels.

But Yes TWK, The Printer is calibrated, and most other photos print out fine, it is just a few that show the posterization.

I have seen articles before stating what to do when that happens, but I cannot recall the article. It was called banding in the article.

Thanks

Any use? http://www.c-f-systems.com/Banding.html

TWK
SB
Sandy Birrell
Mar 11, 2007
"Toobi Won Kenobi" wrote in message
wrote in message
On Sat, 10 Mar 2007 08:38:40 -0000, "Toobi Won Kenobi" wrote:

TWK

The Histagram description was just to tell that there was no discrete
brigtness levels.

But Yes TWK, The Printer is calibrated, and most other photos print out fine, it is just a few that show the posterization.

I have seen articles before stating what to do when that happens, but
I cannot recall the article. It was called banding in the article.

Thanks

Any use? http://www.c-f-systems.com/Banding.html

TWK

Try turning off Black Point Compensation in the ‘Colour Settings’. The following comes from the ‘Help’ for CS. Notice the last bit about blocked shadows.

"Using black point compensation

When Advanced Mode is selected in the Colour Settings dialog box, the Use Black Point Compensation option is available to control whether to adjust for differences in black points when converting colours between colour spaces. When this option is selected, the full dynamic range of the source space is mapped into the full dynamic range of the destination space. When deselected, the dynamic range of the source space is simulated in the destination space; although this mode can result in blocked or gray shadows, it can be useful when the black point of the source space is darker than that of the destination space."

—

Don`t Worry, Be Happy

Sandy
—

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